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Human remains were discovered inside part of a coal delivery system at the power plant near Cochise, Ariz. on Monday morning, authorities said. Read more»

The Cholla Power Plant in Joseph City, near Holbrook.

The EPA has proposed new air-quality regulations at three Arizona coal power plants to help improve visibility at 18 national parks in Arizona, New Mexico and Colorado – including the Grand Canyon – and to protect the health of people living in the region. Critics say the rules will boost electric bills. Read more»